5/16-18 x 5/8 Serrated Hex Flanged Washer Full Thread Screw Black Oxide M-MPF188 They feature a serrated flange

They feature a serrated flange that bites into the mating surface

These screws are ideal for use in a variety of indoor and outdoor applications

These screws are durable and corrosion-resistant

It is 8-18 x 1/2 inches in size and is Type AB

these nuts provide excellent corrosion resistance and a long service life

5/16-18 x 5/8 Serrated Hex Flanged Washer Full Thread Screw Black Oxide M-MPF188 They feature a serrated flangeThe 5 16 18 x 5 8 Serrated Hex Flanged Washer Full Thread Screw Black Oxide is a versatile and durable fastener designed for a wide range of applications. It features a 5 16 18 thread size, a 5 8 inch washer head, and a full thread length. The serrated washer head provides additional grip and prevents the screw from loosening due to vibration or movement. The black oxide finish enhances corrosion resistance and provides a sleek, professional